fixed lint

Author: daniel-sanche

google/cloud/bigtable/data/_async/_read_rows.py

@@ -37,7 +37,6 @@
 from google.cloud.bigtable.data._cross_sync import CrossSync
 
 if TYPE_CHECKING:
-    from google.cloud.bigtable.data._metrics import ActiveAttemptMetric
     from google.cloud.bigtable.data._metrics import ActiveOperationMetric
 
     if CrossSync.is_async:
@@ -349,7 +348,6 @@ async def merge_rows(
         else:
             operation_metric.end_with_success()
 
-
     @staticmethod
     def _revise_request_rowset(
         row_set: RowSetPB,

google/cloud/bigtable/data/_metrics/data_model.py

@@ -396,6 +396,7 @@ def _handle_error(message: str) -> None:
         """
         full_message = f"Error in Bigtable Metrics: {message}"
         LOGGER.warning(full_message)
+        raise RuntimeError(full_message)
 
     def __enter__(self):
         """